[INFO] fetching crate huffman_rs 0.1.0...
[INFO] checking huffman_rs-0.1.0 against try#024378d9203a4009ed73d6db2681b88a8d74ce7a for pr-112160
[INFO] extracting crate huffman_rs 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate huffman_rs 0.1.0 on toolchain 024378d9203a4009ed73d6db2681b88a8d74ce7a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate huffman_rs 0.1.0
[INFO] finished tweaking crates.io crate huffman_rs 0.1.0
[INFO] tweaked toml for crates.io crate huffman_rs 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 887a078c2bd7403d1b65d09ae08ee597186bb497d80e4ccf6242a4e1c030c76c
[INFO] running `Command { std: "docker" "start" "-a" "887a078c2bd7403d1b65d09ae08ee597186bb497d80e4ccf6242a4e1c030c76c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "887a078c2bd7403d1b65d09ae08ee597186bb497d80e4ccf6242a4e1c030c76c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "887a078c2bd7403d1b65d09ae08ee597186bb497d80e4ccf6242a4e1c030c76c", kill_on_drop: false }`
[INFO] [stdout] 887a078c2bd7403d1b65d09ae08ee597186bb497d80e4ccf6242a4e1c030c76c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+024378d9203a4009ed73d6db2681b88a8d74ce7a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] edfba305092f55d250a581b67418b5581f550c69b4311c679f7fb36d32f1c91c
[INFO] running `Command { std: "docker" "start" "-a" "edfba305092f55d250a581b67418b5581f550c69b4311c679f7fb36d32f1c91c", kill_on_drop: false }`
[INFO] [stderr]     Checking huffman_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/huffman/huffman_encoder.rs:24:82
[INFO] [stdout]    |
[INFO] [stdout] 24 |             let mut code: u32 = u32::from_str_radix(HUFFMAN_CODES[*byte as usize].clone(), 2).unwrap();
[INFO] [stdout]    |                                                                                  ^^^^^^^^ unnecessary method call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[deny(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/huffman/huffman_encoder.rs:49:67
[INFO] [stdout]    |
[INFO] [stdout] 49 |             let code: u32 = u32::from_str_radix(HUFFMAN_CODES[256].clone(), 2).unwrap();
[INFO] [stdout]    |                                                                   ^^^^^^^^ unnecessary method call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/huffman/huffman_decoder.rs:78:61
[INFO] [stdout]    |
[INFO] [stdout] 78 |         let key: u32 =  u32::from_str_radix(HUFFMAN_CODES[i].clone(), 2).unwrap();
[INFO] [stdout]    |                                                             ^^^^^^^^ unnecessary method call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `huffman_rs` (lib) due to 4 previous errors
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/huffman/huffman_encoder.rs:24:82
[INFO] [stdout]    |
[INFO] [stdout] 24 |             let mut code: u32 = u32::from_str_radix(HUFFMAN_CODES[*byte as usize].clone(), 2).unwrap();
[INFO] [stdout]    |                                                                                  ^^^^^^^^ unnecessary method call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[deny(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/huffman/huffman_encoder.rs:49:67
[INFO] [stdout]    |
[INFO] [stdout] 49 |             let code: u32 = u32::from_str_radix(HUFFMAN_CODES[256].clone(), 2).unwrap();
[INFO] [stdout]    |                                                                   ^^^^^^^^ unnecessary method call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/huffman/huffman_decoder.rs:78:61
[INFO] [stdout]    |
[INFO] [stdout] 78 |         let key: u32 =  u32::from_str_radix(HUFFMAN_CODES[i].clone(), 2).unwrap();
[INFO] [stdout]    |                                                             ^^^^^^^^ unnecessary method call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `huffman_rs` (lib test) due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "edfba305092f55d250a581b67418b5581f550c69b4311c679f7fb36d32f1c91c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edfba305092f55d250a581b67418b5581f550c69b4311c679f7fb36d32f1c91c", kill_on_drop: false }`
[INFO] [stdout] edfba305092f55d250a581b67418b5581f550c69b4311c679f7fb36d32f1c91c